An accessory gearbox for turbomachine equipment comprising a casing (30) and two gear lines (40a, 40b) arranged in a “V” shape, the casing (30) comprising two arms (30a, 30b) in both of which one of the two gear lines (40a, 40b) is arranged, with a lubricant tank (35) being arranged between the two gear lines (40a, 40b).